Q. What airfare booking websites let you see fares available on a full calendar rather than just three days at a time?

A. I’m assuming that you’re looking for airfare websites that allow you to see all possible travel dates at a glance over a longer travel period than plus or minus three days. Several websites permit flexible travel date search over a 30-day period, including Kayak, Hotwire, Southwest, and United. Cheapair also allows searches over a 330-day period depending on the airline, and only for domestic travel, but it requires a bit more work finding fares than on these other sites.